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Rigid Foam Insulation Installed over Existing Foundation Slabs

Guide describing how to insulate an existing slab floor by adding rigid foam insulation over the slab then installing a floating subfloor.

ICF foundation walls wrap the floor slab in R-22 of insulation while the entire space under the slab is covered with 4.3 inches of closed-cell spray foam.

New Whole-House Solutions Case Study: Exterior Rigid Foam Insulation at the Edge of a Slab Foundation, Fresno, California

Author(s)

IBACOS

Organization(s)

IBACOS

Publication Date

October, 2013

Case study describing application of exterior rigid foam insulation on a foundation system.

Slab Happy, BSI-059

Author(s)

Lstiburek Joseph W

Organization(s)

Building Science Corporation,

BSC

Publication Date

April, 2012

How hard can it be to insulate a flat sheet of concrete? I mean you only have three choices – on the top, on the bottom, or on the edge. OK, you might have some combination of the three as well.

BSC Information - Slab Edge Insulation for All Climates, Sheet 513

Author(s)

Building Science Corporation

Organization(s)

BSC

Publication Date

May, 2009

Information sheet about insulating slabs.

Rigid foam insulation and a thin slab were installed over the dirt and gravel of this sealed crawlspace

The existing slab is retrofitted with epoxy paint, rigid foam insulation, sleepers (furring strips), and subfloor.

Publication Date

Sun, 06/01/2008 - 12:00

Right - Retrofit of an existing basement slab by adding dimple plastic mat, rigid foam insulation, and a floating subfloor.

The existing slab is retrofitted by coating with epoxy paint, then installing rigid foam insulation and a floating subfloor.

Publication Date

Mon, 07/01/2013 - 12:00

Right - The existing basement slab is retrofitted by installing a dimple plastic drainage mat, rigid foam insulation, and a floating subfloor.

Publication Date

Mon, 07/01/2013 - 12:00

This home is heated with in-floor hydronic radiant heating tubes that were installed on top of the R-20 rigid foam under-slab insulation.

Water Management of Existing Basement Floor

Guide describing how to retrofit an existing basement floor or slab to reduce moisture issues.

Water Management of Existing Crawlspace Floor

Guide providing information about treating bulk water drainage issues and moisture control measures in existing basements and crawl spaces.

Reduce Pest Intrusion

Guide describing ways builders can block off entry points and otherwise make homes inhospitable to all manner of pests.

Design and Retrofit for Flood Protection

Information guide describing constructed flood protection measures to minimize damage and increase structural resilience during a flood.

Insulating Existing Floor Overhang

Guide describing how to upgrade a wall with a floor overhang (or cantilever) on an existing home by adding insulation (rigid insulating sheathing and/or closed-cell spray foam) and air-sealing.

Flooding Overview

Overview guide describing residential floodproofing steps.